1. TemperSure Shower Temperature Control System 1 Shower Temperature Control System Tempero Systems Stephen Au-Yeung Francis Merin Victor Tai Jason Wong

2. TemperSure Shower Temperature Control System 2 Overview Problem Vision Features TemperSure Costs System Components Functional Deviation Obstacles Encountered Experiences Outlook Conclusion

3. TemperSure Shower Temperature Control System 3 Problem Study done by Health Canada on pediatric hospital cases

4. TemperSure Shower Temperature Control System 4 Vision Existing solutions –Expensive Mission –Affordable –Safe

5. TemperSure Shower Temperature Control System 5 Solution Our solution: The TemperSure System Goals: Attain and maintain water temperature Features –Automatic temperature adjustment –Temperature monitoring –Anti-scalding provisions –Simple user interface

6. TemperSure Shower Temperature Control System 6 TemperSure Potential markets –Retirement homes –Hospitals –Hotels –Homes with small children or elderly

7. TemperSure Shower Temperature Control System 7 Costs Cost of major components Solenoid Valve $130.00 Thermocouple $90.00 Motors $170.00 Valves $40.00 Motor Electronics $50.00 User Interface $50.00 Plumbing $60.00 Total $590.00

8. TemperSure Shower Temperature Control System 8 System Components User Interface Temperature Controller Anti-Scald Mechanism Motorized Valves Input/ Output Output Sensors Feedback

9. TemperSure Shower Temperature Control System 9 Temperature Acquisition K-Type Thermocouple –Wide range of temperatures –Accuracy –Fast response time –Durable Direct contact with water flow

10. TemperSure Shower Temperature Control System 10 Temperature Adjustment Custom fitted Motorized valves

11. TemperSure Shower Temperature Control System 11 Temperature Adjustment Valves respond to temperature changes Firmware control –Limits temperature range to prevent undesirable temperature changes

12. TemperSure Shower Temperature Control System 12 User Interface Decrease Temperature Increase Temperature Toggle Current Temperature Blinking Display as activity indicator Power Button

13. TemperSure Shower Temperature Control System 13 Anti-Scalding Prevents water temperature over 45°C Solenoid on/off valve Manual override

14. TemperSure Shower Temperature Control System 14 Functional Deviation Non-independent anti-scald unit –Power restrictions User interface –Decreased functionality

15. TemperSure Shower Temperature Control System 15 Obstacles Encountered Valve selection –Gate valve –Ball valve Valves: Water flow vs. valve position Plumbing Motor unit Sensors

16. TemperSure Shower Temperature Control System 16 Experiences Water adds difficulty to project Try to keep to area of expertise

17. TemperSure Shower Temperature Control System 17 Outlook Independent anti-scalding unit –Size reduction through PCB –Battery or self powered –Smaller solenoid valve size Improve control algorithms Precise flow control

18. TemperSure Shower Temperature Control System 18 Conclusion Summary Acknowledgements –Chao Cheng –Gary Houghton Questions Demonstration